function page_nav(frm,num){
		frm.pageIndex.value = num;
		frm.submit();
}

function jump_to(totalPageCount,frm,num){//页面跳转函数
	if(num <= 0){
		alert("请输入大于0的正整数！");
		return false;
	}else if((num-totalPageCount) > 0){
		alert("请输入小于总页数的页码");
		return false;
	}else{
		page_nav(frm,num);
	}
}